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Maternal Obesity, 25-Hydroxy Vitamin D Concentration, and Bone Density in Breastfeeding Dyads.


ABSTRACT: OBJECTIVE:To examine the association between maternal body mass index (BMI) and serum 25-hydroxy vitamin D [25(OH)D] concentration and bone density in mother-infant pairs. STUDY DESIGN:The study was a secondary analysis of 234 exclusively breastfeeding dyads who were recruited in the first postpartum month for a randomized controlled trial of maternal vs infant vitamin D supplementation. Mean 25(OH)D concentrations and bone mineral density (BMD) were compared by BMI group. The adjusted association between maternal BMI and 25(OH)D and bone density was examined at 1, 4, and 7 months postpartum. RESULTS:Obese breastfeeding women had lower 25(OH)D concentrations and higher BMD than lean women at all 3 time points (P ?< ?.01). Higher maternal BMI was associated with lower maternal serum levels of 25(OH)D at 1, 4, and 7 months postpartum (adjusted ? = -0.45 ng/ml per kg/m2, 95% CI -.076, -0.14, at 1 month) and higher BMD at the same time points (? = 0.006 BMD z score; 95% CI 0.003, 0.01 at 1 month). Seventy-six percent of infants were vitamin D deficient at 1 month of age. Infants born to overweight and obese mothers had lower 25(OH)D concentrations than infants of lean mothers (P?

SUBMITTER: Sen S 

PROVIDER: S-EPMC5679215 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature

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Maternal Obesity, 25-Hydroxy Vitamin D Concentration, and Bone Density in Breastfeeding Dyads.

Sen Sarbattama S   Penfield-Cyr Annie A   Hollis Bruce W BW   Wagner Carol L CL  

The Journal of pediatrics 20170523


<h4>Objective</h4>To examine the association between maternal body mass index (BMI) and serum 25-hydroxy vitamin D [25(OH)D] concentration and bone density in mother-infant pairs.<h4>Study design</h4>The study was a secondary analysis of 234 exclusively breastfeeding dyads who were recruited in the first postpartum month for a randomized controlled trial of maternal vs infant vitamin D supplementation. Mean 25(OH)D concentrations and bone mineral density (BMD) were compared by BMI group. The adj  ...[more]

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